High Bandwidth GaN-Based Micro-LEDs for Multi-Gb/s Visible Light Communications

Ferreira, R.; Xie, Enyuan; McKendry, Jonathan J. D.; Rajbhandari, Sujan; Chun, Hyunchae; Faulkner, Grahame; Watson, Scott; Kelly, Anthony E.; Gu, Erdan; Penty, R.V.; White, I.H.; O’Brien, Dominic; Dawson, Martin D.

doi:10.1109/lpt.2016.2581318

Cited by 287 publications

(171 citation statements)

References 16 publications

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“…At 450 nm, micro-LEDs have set the standard for high-speed VLC. A 60 μm diameter pixel has achieved 3 Gb/s [6], and more recently a single pixel of a new segmented array has demonstrated 5 Gb/s [7]. The novel micro-LEDs emitting at 400 nm featured in the current work offer a number of advantages over the 450 nm devices previously reported [7].…”

Section: Introductionmentioning

confidence: 75%

“…A 60 μm diameter pixel has achieved 3 Gb/s [6], and more recently a single pixel of a new segmented array has demonstrated 5 Gb/s [7]. The novel micro-LEDs emitting at 400 nm featured in the current work offer a number of advantages over the 450 nm devices previously reported [7]. From typical trends concerning the internal quantum efficiency (IQE) of indium GaN-based active regions, comparable IQEs are expected at 400 and 450 nm, whereas the IQE decreases steeply at shorter emission wavelengths [8].…”

Section: Introductionmentioning

confidence: 99%

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Towards 10 Gb/s orthogonal frequency division multiplexing-based visible light communication using a GaN violet micro-LED

et al. 2017

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Visible light communication (VLC) is a promising solution to the increasing demands for wireless connectivity. Gallium nitride micro-sized light emitting diodes (micro-LEDs) are strong candidates for VLC due to their high bandwidths. Segmented violet micro-LEDs are reported in this work with electrical-to-optical bandwidths up to 655 MHz. An orthogonal frequency division multiplexing-based VLC system with adaptive bit and energy loading is demonstrated, and a data transmission rate of 11.95 Gb/s is achieved with a violet micro-LED, when the nonlinear distortion of the micro-LED is the dominant noise source of the VLC system. A record 7.91 Gb/s data transmission rate is reported below the forward error correction threshold using a single pixel of the segmented array when all the noise sources of the VLC system are present.

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Section: Introductionmentioning

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Towards 10 Gb/s orthogonal frequency division multiplexing-based visible light communication using a GaN violet micro-LED

et al. 2017

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“…18 Thus, the carrier lifetime of typical LEDs can be reduced on the order of ns, while the shortest reported value of μLEDs is 0.1 ~ 0.2 ns with the advantage of operating at high current density. 4,18 The highest reported bandwidths in QW LEDs are saturated near 1 GHz (GaN) and 1.7 GHz (GaAs). 4,6,7,19 …”

Section: Fundamentals Of Modulation For Lasers and Ledsmentioning

confidence: 99%

“…4,18 The highest reported bandwidths in QW LEDs are saturated near 1 GHz (GaN) and 1.7 GHz (GaAs). 4,6,7,19 …”

Section: Fundamentals Of Modulation For Lasers and Ledsmentioning

confidence: 99%

Semipolar GaN-based laser diodes for Gbit/s white lighting communication: devices to systems

Lee

Shen

Cozzan

et al. 2018

Gallium Nitride Materials and Devices XIII

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We report the high-speed performance of semipolar GaN ridge laser diodes at 410 nm and the dynamic characteristics including differential gain, damping, and the intrinsic maximum bandwidth. To the best of our knowledge, the achieved modulation bandwidth of 6.8 GHz is the highest reported value in the blue-violet spectrum. The calculated differential gain of ~3 x 10 -16 cm 2 , which is a critical factor in high-speed modulation, proved theoretical predictions of higher gain in semipolar GaN laser diodes than the conventional c-plane counterparts. In addition, we demonstrate the first novel white lighting communication system by using our near-ultraviolet (NUV) LDs and pumping red-, green-, and blueemitting phosphors. This system satisfies both purposes of high-speed communication and high-quality white light illumination. A high data rate of 1.5 Gbit/s using on-off keying (OOK) modulation together with a high color rendering index (CRI) of 80 has been measured.

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“…3 However, LED bandwidth is limited by the material carrier lifetime and efficiency is lowered when increasing the carrier density.…”

Section: Introductionmentioning

confidence: 99%

15 Gb/s OFDM-based VLC using direct modulation of 450 GaN laser diode

Viola

Islim

Watson

et al. 2017

Advanced Free-Space Optical Communication Techniques and Applications III

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A record data rate for visible light communications (VLC) using a transistor outline (TO) packaged Gallium Nitride (GaN) laser diode is reported. Using a system 3 dB bandwidth of 1.4 GHz data transmission at 15 Gb/s is reported. This is achieved due to the use of orthogonal frequency division multiplexing (OFDM) in combination with a high system signal to noise ratio (SNR) and adaptive bit loading extending the effective bandwidth to 2.5 GHz. To the best of authors knowledge this is the highest reported data rate for single channel VLC.

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High Bandwidth GaN-Based Micro-LEDs for Multi-Gb/s Visible Light Communications

Cited by 287 publications

References 16 publications

Towards 10 Gb/s orthogonal frequency division multiplexing-based visible light communication using a GaN violet micro-LED

Towards 10 Gb/s orthogonal frequency division multiplexing-based visible light communication using a GaN violet micro-LED

Semipolar GaN-based laser diodes for Gbit/s white lighting communication: devices to systems

15 Gb/s OFDM-based VLC using direct modulation of 450 GaN laser diode

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